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Crystal structure of Thermus thermophilus transcription initiation complex comprising a truncated sigma finger
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4G7H
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 EVAPORATION 8.7 295 100 mM Tris-HCl, pH 8.7, 200 mM potassium chloride, 50 mM magnesium chloride, 10% PEG4000
Crystal Properties Matthews coefficient Solvent content 3.15 60.95
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 183.698 α = 90 b = 103.847 β = 98.609 c = 295.41 γ = 90
Symmetry Space Group C 1 2 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 CCD Nonius Kappa CCD 2012-10-09 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X29A 1.1 NSLS X29A
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot 1 3.45 45 99.9 0.165 0.165 8.514 3.8 72642 81.76
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 3.45 3.51 99.2 0.695 0.695 1.757 3.5
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 4G7H 3.45 44.23 1.36 72583 1603 99.69 0.2209 0.2201 0.2193 0.2581 0.2555 101.15
Temperature Factor Modeling Anisotropic B[1][1] Anisotropic B[1][2] Anisotropic B[1][3] Anisotropic B[2][2] Anisotropic B[2][3] Anisotropic B[3][3]
RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 24.8334 f_angle_d 1.0063 f_chiral_restr 0.5855 f_bond_d 0.0041 f_plane_restr 0.0031
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 27523 Nucleic Acid Atoms 697 Solvent Atoms Heterogen Atoms 7
Software Software Software Name Purpose PHENIX refinement HKL-2000 data reduction HKL-2000 data scaling PHASER phasing